Taking His Manhood (Leah and Jason #1)

My ex-boyfriend called in tears about how his never-ending sex drive was ruining his life and begged me to castrate him. At first, I thought it was some sick prank, but arrived to discover that he was completely serious. However, I couldn't destroy something that held so many fond memories for me without riding it one last time and experiencing with him the final pleasures of his life.
This erotic short story is about 10,000 words.